ccm_alt.h

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#ifndef MBEDTLS_CCM_ALT_H
#define MBEDTLS_CCM_ALT_H

#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif

/***************************************************************************/
/***************************************************************************/
#if defined( MBEDTLS_CCM_ALT )
/* SiliconLabs CRYPTO hardware acceleration implementation */

#include "aesdrv.h"
#include "sl_crypto.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct
{
    AESDRV_Context_t                aesdrv_ctx; 
    unsigned int                    keybits;    
    uint32_t                        key[8];     
    mbedtls_device_io_mode          io_mode;          
    mbedtls_device_io_mode_specific io_mode_specific; 
}
mbedtls_ccm_context;

void mbedtls_ccm_init( mbedtls_ccm_context *ctx );

int mbedtls_ccm_set_device_instance(mbedtls_ccm_context* ctx,
                                    unsigned int         devno);

int mbedtls_ccm_set_device_lock_wait_ticks(mbedtls_ccm_context *ctx,
                                           int                  ticks);

int mbedtls_ccm_set_device_io_mode
(
 mbedtls_ccm_context*             ctx,
 mbedtls_device_io_mode           mode,
 mbedtls_device_io_mode_specific* specific
 );
  
int mbedtls_ccm_setkey( mbedtls_ccm_context *ctx,
                        mbedtls_cipher_id_t cipher,
                        const unsigned char *key,
                        unsigned int keybits );

void mbedtls_ccm_free( mbedtls_ccm_context *ctx );

int mbedtls_ccm_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length,
                         const unsigned char *iv, size_t iv_len,
                         const unsigned char *add, size_t add_len,
                         const unsigned char *input, unsigned char *output,
                         unsigned char *tag, size_t tag_len );

int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
                      const unsigned char *iv, size_t iv_len,
                      const unsigned char *add, size_t add_len,
                      const unsigned char *input, unsigned char *output,
                      const unsigned char *tag, size_t tag_len );

int mbedtls_ccm_encrypt_and_tag_ble( mbedtls_ccm_context *ctx,
                               unsigned char       *data,
                               size_t               length,
                               const unsigned char *iv,
                               unsigned char        header,
                               unsigned char       *tag );

int mbedtls_ccm_auth_decrypt_ble( mbedtls_ccm_context *ctx,
                             unsigned char       *data,
                             size_t               length,
                             const unsigned char *iv,
                             unsigned char        header,
                             unsigned char       *tag );

#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)

int mbedtls_ccm_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */

#ifdef __cplusplus
}
#endif

#endif /* #if defined( MBEDTLS_CCM_ALT ) */

#endif /* MBEDTLS_CCM_ALT_H */